EP0862022A2 - Wasseraufbereitungsanlage mit einem Filter - Google Patents
Wasseraufbereitungsanlage mit einem Filter Download PDFInfo
- Publication number
- EP0862022A2 EP0862022A2 EP98102862A EP98102862A EP0862022A2 EP 0862022 A2 EP0862022 A2 EP 0862022A2 EP 98102862 A EP98102862 A EP 98102862A EP 98102862 A EP98102862 A EP 98102862A EP 0862022 A2 EP0862022 A2 EP 0862022A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- filter
- cross
- water treatment
- treatment plant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/147—Microfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/22—Controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0073—Arrangements for preventing the occurrence or proliferation of microorganisms in the water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
Definitions
- the present invention relates to a water treatment plant with a filter, in particular for the retention of under the name Legionella "known pathogens.
- Legionella pneumophila and a lung disease causing microbes is that they occur to a small extent in the natural microflora of the water, multiply particularly in still water at 30 to 50 ° C water temperature and the infection apparently only by inhalation of aerosols, for example when showers take place.
- the water must be heated to at least 70 ° C.
- a disadvantage is that a certain elevated temperature must be maintained in the entire pipe system, especially the fact that 100% disinfection is hardly possible because the mentioned Core temperature "can hardly reach all dead corners and corners of the pipe system.
- the entire installation system must also be designed for these high temperatures, and there may inevitably be greater limescale deposits with all their consequential damage and costs.
- a water outlet fitting is also known, in which there is a fine-pored filter to hold back the legionella (DE 39 18 468 A1).
- the disadvantage here is that, unlike the cross-flow filter, it is arranged in the flow direction Filter cartridge is that clogs up quickly and then completely replaced must become. Hence, to use such filter cartridges sparingly a switchover option to unfiltered water is provided, which increases the risk of Confusion.
- the filter is attached to the Water outlet fitting, i.e. at the end of the pipe system also under the Disadvantageous aspect that the spread of Legionella in the entire pipeline network is not hindered in any way.
- filter systems with automatic backwashing are known, in which, while maintaining the possibility of water extraction, a changeover between several filters is carried out automatically, usually depending on the back pressure due to blockage of the filter, which is different from the cross-flow filter in the Flow direction (so-called dead end ”) and consequently clog very quickly (DE 32 15 533 A1 and DE 35 26 293 A1).
- dead end the cross-flow filter in the Flow direction
- this principle is very complex and complicated and, on the other hand, in cross-flow filters, where, because of the retentate outflow, there is basically pure Back pressure can build up, not applicable.
- the invention is therefore based on the object, with high security and low Energy expenditure the spread of pathogens, especially legionella, to prevent in the pipeline network of water treatment plants, whereby the latter through overall minimal technical effort, low operating costs as well as high operational readiness.
- the water treatment plant according to the invention enables equipped with a Filter of extreme filter fineness, which is also characterized by quick backwashing and long service life, the sterile filtration of tap water, the otherwise, for example, with regard to the mineral content, retained its original state and still has drinking water quality.
- the system shows high filter performance and long service life of the filter elements short backwash time, during which the water withdrawal is not interrupted.
- the construction of the system is very simple and reliable and it is there are no scheduled wear or consumable parts to be replaced.
- the hot water treatment system intended for a hotel for example has a water heater 1 with a built-in radiator or heat exchanger 2, which via a fresh water supply line 3, a first pump 4 and parallel to this a first check valve 5 from the public drinking water network or fed to a well (not shown).
- the warmed water reached, usually under pressure from the public drinking water network about 0.6 MPa, via an open first solenoid valve 6 into the cross-flow filter 7.
- This cross-flow filter 7 consists essentially of filter tubes 8, of which 8 pieces are indicated in the illustrated embodiment.
- the number and size of the filter tubes 8 to be connected in parallel is to be determined according to the required throughput of filtered water.
- One of these filter tubes 8 has, for example, an outer diameter of 25 mm, a length of 1200 mm and is traversed in its longitudinal direction by 19 holes (not shown), each 3.5 mm in diameter, which are uniformly distributed over the cross section.
- the filter tubes 8 consist of aluminum oxide ceramic with a pore size of max. 4 ⁇ m.
- the bores are coated on the inside with a special filter membrane, also made of aluminum oxide ceramic, whose maximum pore size is set to 0.2 ⁇ m due to the size of the microbes to be retained.
- the area of this filter membrane of a filter tube 8 is 0.24 m 2 and the filtrate throughput at a pressure difference of 0.1 MPa is approximately 400 liters per hour.
- a cross-flow filter 7 The special feature of the function of a cross-flow filter 7 is that on the end face of the filter tubes 8, which is sealed against the outer surface of the filter tubes 8, the water to be filtered enters the holes under pressure, in this case from above and partly emerges again as filtrate on the outer surface of the same. The remaining water emerges unfiltered as a so-called retentate from the bottom of the boreholes and reaches a second pump 9 and a second check valve 10 again in the water heater 1.
- the advantage of this arrangement over a so-called dead end "filter, in which all incoming water passes through, consists in the fact that the retentate flow, which is not even subjected to the filtration, parallel to the filter membrane prevents it from being completely blocked.
- the back-flow of the cross-flow filter 7 takes place after a certain flow has passed.
- a flow meter 15 and / or by a measuring device 16 determined pressure drop behind the cross-flow filter 7 due to a certain clogging, if not constipated within 1 to 2 seconds, by closing the first solenoid valve 6 and a second during this time
- Solenoid valve 17 is opened in a drain line.
- This causes the pressure in the Cross-flow filter 7 in front of the filter membranes, while the one behind them in Pipeline network 11 through a diaphragm type accumulator 18 even then is kept above a certain value if at the same time from the pipeline network 11 still hot water is removed.
- the germs Flushing liquid can flow out through the opened second solenoid valve 17.
- the check valve 10 prevents the now under higher pressure than that Fresh water standing rinsing liquid flows into the water heater 1.
- the first solenoid valve 6 is opened and the second Solenoid valve 17 closed. If as a result of backwashing or with heavy withdrawal of hot water from the pipeline network 11 of the form in the water heater 1 and thus falls too sharply at the input of the cross-flow filter 7 the delivery pressure of the fresh water supply line 3 is supported by the first pump 4 are switched on via a pressure sensor 19 and a pressure difference controller 20 becomes.
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Hydroponics (AREA)
Abstract
Description
- 1
- Warmwasserbereiter
- 2
- Heizkörper bzw. Wärmetauscher
- 3
- Frischwasserzufuhrleitung
- 4
- erste Pumpe
- 5
- erstes Rückschlagventil
- 6
- erstes Magnetventil
- 7
- Cross-Flow-Filter
- 8
- Filterrohr
- 9
- zweite Pumpe
- 10
- zweites Rückschlagventil
- 11
- Rohrleitungsnetz
- 12
- Rückflußleitung
- 13
- dritte Pumpe
- 14
- drittes Rückschlagventil
- 15
- Durchflußmengenzähler
- 16
- Meßgerät
- 17
- zweites Magnetventil
- 18
- Druckspeicher
- 19
- Drucksensor
- 20
- Druckdifferenzsteuerung
Claims (9)
- Wasseraufbereitungsanlage mit einem Filter, insbesondere zur Zurückhaltung der unter der Bezeichnung Legionellen" bekannten Krankheitserreger, dadurch gekennzeichnet, daß zwischen dem Wasservorratsbehälter, der auch ein Warmwasserbereiter (1) sein kann, und dem Rohrleitungsnetz (11) zur Wasserentnahme ein rückspülbarer Cross-Flow-Filter (Querstromfilter) (7) angeordnet ist.
- Wasseraufbereitungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß der Cross-Flow-Filter (7) im wesentlichen aus einem grobporösen Keramikkörper (8) besteht, dessen dem Wasservorratsbehälter (1) zugewandte Flächen mit einer keramischen Filtermembran beschichtet sind, deren maximale Porengröße 0,2 µm beträgt.
- Wasseraufbereitungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß der Cross-Flow-Filter (7) im wesentlichen aus einer Polymer-Filtermembran besteht, deren maximale Porengröße 0,2 µm beträgt.
- Wasseraufbereitungsanlage nach einem der bisherigen Ansprüche, dadurch gekennzeichnet, daß die durch Druckumkehr zwischen der Retentat- und der Filtratseite (welche der Wasserzufuhr und -entnahme entsprechen) des Cross-Flow-Filters (7) bewirkbare Rückspülung desselben durch einen Durchflußmengenzähler (15) und/oder ein Meßgerät (16) für einen Druckabfall zwischen Bereichen hinter dem Cross-Flow-Filter (7) auslösbar ist.
- Wasseraufbereitungsanlage nach einem der bisherigen Ansprüche, gekennzeichnet durch einen Druckspeicher (18) und/oder einen Druckregelkreis, bestehend aus einem Drucksensor (19) auf der Wasserentnahmeseite, einer ersten Pumpe (4) in der Frischwasserzufuhrleitung (3) und einer zwischen beiden angeordneten Druckdifferenzsteuerung (20), zur Aufrechterhaltung des Entnahmedrucks im Rohrleitungsnetz (11).
- Wasseraufbereitungsanlage nach einem der bisherigen Ansprüche, dadurch gekennzeichnet, daß zwischen der Retentatseite des Cross-Flow-Filters (7) und/oder einer Rückflußleitung (12) von der Entnahmeseite einerseits und dem Wasservorratsbehälter (1) andererseits je eine in Richtung desselben wirkende zweite Pumpe (9) bzw. dritte Pumpe (13) angeordnet ist.
- Wasseraufbereitungsanlage nach Anspruch 6, dadurch gekennzeichnet, daß zwischen der zweiten bzw. dritten Pumpe (9, 13) und dem Wasservorratsbehälter (1) ein zweites bzw. drittes Rückschlagventil (10, 14) angeordnet ist.
- Wasseraufbereitungsanlage nach Anspruch 5 bis 7, dadurch gekennzeichnet, daß in der Frischwasserzufuhrleitung (3) parallel zu ersten Pumpe (4) ein erstes Rückschlagventil (5) angeordnet ist.
- Wasseraufbereitungsanlage nach Anspruch 4 bis 8, dadurch gekennzeichnet, daß der Zulauf und der Ablauf auf der Retentatseite des Cross-Flow-Filters (7) wechselweise durch Ventile, vorzugsweise ein erstes und ein zweites Magnetventil (6, 17) verschließbar ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997107830 DE19707830A1 (de) | 1997-02-27 | 1997-02-27 | Wasseraufbereitungsanlage mit einem Filter |
| DE19707830 | 1997-02-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0862022A2 true EP0862022A2 (de) | 1998-09-02 |
| EP0862022A3 EP0862022A3 (de) | 1998-11-18 |
Family
ID=7821630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98102862A Withdrawn EP0862022A3 (de) | 1997-02-27 | 1998-02-19 | Wasseraufbereitungsanlage mit einem Filter |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0862022A3 (de) |
| DE (1) | DE19707830A1 (de) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001013045A1 (de) * | 1999-08-18 | 2001-02-22 | Klaus Leiter | Sanitäre anlage |
| FR2820056A1 (fr) * | 2001-01-31 | 2002-08-02 | Toshiba Kk | Appareil de filtrage, procede associe de contre-lavage, dispositif de filtrage et centrale electrique |
| WO2007140713A1 (en) * | 2006-06-01 | 2007-12-13 | Keqing Yang | a purification apparatus and applied system |
| EP2933232A1 (de) * | 2014-04-17 | 2015-10-21 | Grünbeck Wasseraufbereitung GmbH | Verfahren zur filtration von trink- oder betriebswasser in einer wasserversorgungseinrichtung |
| CN110486785A (zh) * | 2019-08-22 | 2019-11-22 | 广州市中潭空气净化科技有限公司 | 一种用于改善室内环境的使用便捷的供暖系统 |
| CN116808879A (zh) * | 2023-08-28 | 2023-09-29 | 安徽建筑大学 | 一种净水器结构 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019132463A1 (de) * | 2019-11-29 | 2021-06-02 | Exergene Technologie Gmbh | Leitungsanordnung zur Vorbehandlung von Trinkwasser und Verfahren zum Betreiben der Leitungsanordnung |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3918468A1 (de) * | 1988-06-06 | 1990-04-19 | Symbiopharm Dr Volker Rusch Gm | Wasseraustrittsarmatur |
| US5242595A (en) * | 1991-04-25 | 1993-09-07 | U.S. Filter/Illinois Water Treatment, Inc. | Bacteria removal by ceramic microfiltration |
| US5352362A (en) * | 1992-03-09 | 1994-10-04 | Showa Water Industries Co., Ltd | Brine recycling method and apparatus therefor |
| FR2693474B1 (fr) * | 1992-07-09 | 1994-08-26 | Daniel Garin | Procédé et dispositif de séparation et de concentration de microorganismes contaminants. |
-
1997
- 1997-02-27 DE DE1997107830 patent/DE19707830A1/de not_active Ceased
-
1998
- 1998-02-19 EP EP98102862A patent/EP0862022A3/de not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001013045A1 (de) * | 1999-08-18 | 2001-02-22 | Klaus Leiter | Sanitäre anlage |
| FR2820056A1 (fr) * | 2001-01-31 | 2002-08-02 | Toshiba Kk | Appareil de filtrage, procede associe de contre-lavage, dispositif de filtrage et centrale electrique |
| US7309424B2 (en) | 2001-01-31 | 2007-12-18 | Kabushiki Kaisha Toshiba | Filtering apparatus, back wash method therefor, filtering device and power plant |
| US7754074B2 (en) | 2001-01-31 | 2010-07-13 | Kabushiki Kaisha Toshiba | Filtering apparatus, back wash method therefor, filtering device and power plant |
| WO2007140713A1 (en) * | 2006-06-01 | 2007-12-13 | Keqing Yang | a purification apparatus and applied system |
| EP2933232A1 (de) * | 2014-04-17 | 2015-10-21 | Grünbeck Wasseraufbereitung GmbH | Verfahren zur filtration von trink- oder betriebswasser in einer wasserversorgungseinrichtung |
| CN110486785A (zh) * | 2019-08-22 | 2019-11-22 | 广州市中潭空气净化科技有限公司 | 一种用于改善室内环境的使用便捷的供暖系统 |
| CN116808879A (zh) * | 2023-08-28 | 2023-09-29 | 安徽建筑大学 | 一种净水器结构 |
| CN116808879B (zh) * | 2023-08-28 | 2023-11-28 | 安徽建筑大学 | 一种净水器结构 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0862022A3 (de) | 1998-11-18 |
| DE19707830A1 (de) | 1998-09-03 |
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